Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A display device comprising: a display panel including a plurality of data lines, a plurality of gate lines, and a plurality of pixels in a display area; a gate driver in a non-display area of the display panel, the gate driver supplying gate signals to the plurality of gate lines; and a gate control line for supplying a gate control signal to the gate driver, the gate control line including: a first gate control line, and a second gate control line overlapping the first gate control line with an insulation layer therebetween, the second gate control line being connected to the first gate control line through a first contact hole passing through the insulation layer; and a cathode auxiliary electrode that does not overlap the first gate control line and the second gate control line, wherein the gate driver includes a plurality of stages, the cathode auxiliary electrode is disposed on the plurality of stages and the gate control line, the cathode auxiliary electrode comprises a first outgas hole provided on the plurality of stages and a second outgas hole on the first gate control line or the second gate control line, the gate control line includes a straight section and a curve section, the second outgas hole includes a first opening on the straight section and a second opening on the curve section, and an area of the first outgas hole is less than an area of each of the first opening and the second opening.
A display device includes a display panel with data lines, gate lines, and pixels in a display area, along with a gate driver in a non-display area that supplies gate signals to the gate lines. The gate driver is controlled by a gate control line, which consists of a first gate control line and a second gate control line overlapping the first with an insulation layer in between. The second gate control line connects to the first through a contact hole in the insulation layer. A cathode auxiliary electrode, positioned to avoid overlapping the gate control lines, is placed over the gate driver stages and the gate control line. This electrode includes a first outgas hole over the stages and a second outgas hole over the gate control line. The gate control line has both straight and curved sections, with the second outgas hole featuring openings in both sections. The first outgas hole is smaller in area than either opening in the second outgas hole. This design improves gas venting and electrical performance in the display device.
2. The display device of claim 1 , wherein each of the plurality of stages is connected to a corresponding one of the plurality of gate lines, wherein the first gate control line or the second gate control line is connected to some of the plurality of stages.
This invention relates to a display device with an improved gate driving circuit. The device addresses the problem of signal delay and power consumption in large-area displays, particularly those using organic light-emitting diodes (OLEDs) or liquid crystal displays (LCDs). The display device includes a gate driving circuit with multiple stages, each stage connected to a corresponding gate line to control pixel switching. The circuit also includes a first and second gate control line, where these control lines are selectively connected to some of the stages. This selective connection allows for more efficient signal distribution, reducing power consumption and minimizing signal delay across the display panel. The stages in the gate driving circuit generate scan signals to drive the gate lines, ensuring uniform display performance. By connecting the gate control lines to only some stages, the circuit avoids unnecessary signal propagation, improving overall efficiency. The design is particularly useful in high-resolution or large-screen displays where signal integrity and power efficiency are critical. The invention enhances display performance by optimizing the gate driving circuit's architecture.
3. The display device of claim 1 , wherein the plurality of pixels each comprise: a thin film transistor (TFT) including a gate electrode, a source electrode, and a drain electrode; an anode auxiliary electrode connected to the source electrode or the drain electrode of the TFT; an anode electrode connected to the anode auxiliary electrode; a first capacitor electrode formed of a same material and on a same layer as the gate electrode of the TFT; and a second capacitor electrode overlapping the first capacitor electrode; wherein the first gate control line is formed of a same material and on a same layer as the source electrode and the drain electrode of the TFT, and the second gate control line is formed of a same material and on a same layer as the anode auxiliary electrode.
4. The display device of claim 3 , further comprising: a bridge line connecting the first gate control line to some of the plurality of stages.
5. The display device of claim 4 , wherein the first gate control line is connected to the bridge line through a second contact hole passing through an interlayer dielectric, and a size of the first contact hole is greater than a size of the second contact hole.
6. The display device of claim 4 , wherein the bridge line is formed of the same material and on the same layer as the gate electrode of the TFT.
7. The display device of claim 3 , wherein the display panel further comprises a high level voltage line through which a high-level voltage is supplied, the high level voltage line including: a first high level voltage line; and a second high level voltage line overlapping the first high level voltage line with the insulation layer therebetween, the second high level voltage line being connected to the first high level voltage line through a third contact hole passing through the insulation layer.
8. The display device of claim 7 , wherein the first gate control line is formed of a same material and on a same layer as the first high level voltage line, and the second gate control line is formed of a same material and on a same layer as the second high level voltage line.
9. The display device of claim 8 , wherein the second capacitor electrode is disposed between the first capacitor electrode and the first high level voltage line.
10. The display device of claim 7 , wherein the second capacitor electrode being connected to the first high level voltage line.
11. The display device of claim 1 , wherein the area of the second opening is greater than the area of the first opening.
12. The display device of claim 1 , wherein the plurality of pixels each comprise: a thin film transistor (TFT) including a gate electrode, a source electrode, and a drain electrode; an anode auxiliary electrode connected to the source electrode or the drain electrode of the TFT; and an anode electrode connected to the anode auxiliary electrode, and the cathode auxiliary electrode is formed of a same material and on a same layer as the anode electrode.
13. The display device of claim 1 , further comprising: a cathode electrode in the display area, the cathode electrode being connected to the cathode auxiliary electrode.
14. A display device comprising: a display panel including a plurality of data lines, a plurality of gate lines, and a plurality of pixels in a display area; a gate driver in a non-display area of the display panel, the gate driver including a plurality of stages, each of the plurality of stages connected to each of the plurality of gate lines respectively; a gate control line for supplying a gate control signal to the plurality of stages; a planarization layer on the plurality of stages and the gate control line; and a cathode auxiliary electrode on the planarization layer, wherein the cathode auxiliary electrode does not overlap the plurality of stages and the gate control line, wherein the cathode auxiliary electrode is disposed on the plurality of stages and the gate control line, the cathode auxiliary electrode comprises a first outgas hole provided on the plurality of stages and a second outgas hole on the gate control line, the gate control line includes a straight section and a curve section, the second outgas hole includes a first opening on the straight section and a second opening on the curve section, and an area of the first outgas hole is less than an area of each of the first opening and the second opening.
15. The display device of claim 14 , wherein the area of the second opening is greater than the area of the first opening.
A display device includes a housing with a first opening and a second opening, where the second opening has a larger area than the first opening. The housing encloses a display panel and a light source, with the first opening positioned to allow light from the light source to pass through the display panel. The second opening is positioned to allow light from the display panel to exit the housing. The display panel is configured to modulate light from the light source to produce an image. The housing may also include a reflective surface to direct light from the light source toward the display panel. The device may further include a light guide to distribute light from the light source across the display panel. The larger second opening ensures sufficient light output for visibility while the smaller first opening optimizes light input efficiency. This configuration improves image brightness and contrast by controlling light distribution within the housing. The device is particularly useful in applications requiring high visibility under varying lighting conditions, such as outdoor displays or portable electronic devices. The design ensures efficient light utilization while maintaining structural integrity and compactness.
16. The display device of claim 14 , wherein the plurality of pixels each comprise: a thin film transistor (TFT) including a gate electrode, a source electrode, and a drain electrode; an anode auxiliary electrode connected to the source electrode or the drain electrode of the TFT; and an anode electrode connected to the anode auxiliary electrode, and the cathode auxiliary electrode is formed of a same material and on a same layer as the anode electrode.
This invention relates to display devices, specifically addressing challenges in pixel structure design for improved performance and manufacturing efficiency. The device includes an array of pixels, each containing a thin film transistor (TFT) with a gate electrode, source electrode, and drain electrode. Each pixel also features an anode auxiliary electrode connected to either the source or drain electrode of the TFT, and an anode electrode connected to the anode auxiliary electrode. A key aspect is that the cathode auxiliary electrode is formed from the same material and on the same layer as the anode electrode. This design simplifies the manufacturing process by reducing the number of layers and materials required, while ensuring electrical connectivity and performance. The TFT controls the current flow to the anode electrode, which in turn drives the light-emitting element in the pixel. The anode auxiliary electrode enhances current distribution, improving uniformity and efficiency. By integrating the cathode auxiliary electrode with the anode electrode layer, the device achieves a more streamlined structure without compromising functionality. This approach is particularly useful in organic light-emitting diode (OLED) displays, where precise current management and efficient layering are critical for optimal performance. The invention aims to balance manufacturing simplicity with high-quality display output.
17. The display device of claim 14 , further comprising: a cathode electrode in the display area, the cathode electrode connected to the cathode auxiliary electrode.
A display device includes a display area with a plurality of pixels and a non-display area surrounding the display area. The device has a cathode auxiliary electrode in the non-display area, which is electrically connected to a cathode electrode in the display area. The cathode auxiliary electrode is configured to reduce voltage drop in the cathode electrode, ensuring uniform luminance across the display. The cathode auxiliary electrode may be formed as a mesh or grid structure to minimize light blockage while maintaining electrical conductivity. The device may also include a thin-film transistor (TFT) layer for driving the pixels, where the cathode auxiliary electrode is positioned above or below the TFT layer. The cathode electrode in the display area is electrically connected to the cathode auxiliary electrode, allowing current to flow efficiently, which helps maintain consistent brightness and performance across the display. This design is particularly useful in organic light-emitting diode (OLED) displays, where voltage drop can lead to uneven brightness and reduced efficiency. The cathode auxiliary electrode provides a low-resistance path for current, compensating for resistance in the cathode electrode and improving overall display quality.
18. The display device of claim 14 , the gate control line includes a first gate control line and a second gate control line disposed on a layer different from the first gate control line, and the first gate control line is connected to the second gate control line through a contact hole of an insulation layer disposed between the first gate control line and the second gate control line.
19. A display device comprising: a display panel including a display area and a non-display area adjacent to the display area; a gate driver in the non-display area of the display panel; a gate control line disposed for supplying a gate control signal to the gate driver; and a cathode auxiliary electrode disposed in the non-display area and including an outgas hole, wherein the gate control line includes first and second gate control lines disposed on different layers, the first and second gate control lines being connected to each other through a contact hole, wherein the cathode auxiliary electrode does not overlap the first and second gate control lines, the gate driver includes a plurality of stages, the cathode auxiliary electrode is formed on the plurality of stages and the gate control line, the cathode auxiliary electrode comprises a first outgas hole provided on the plurality of stages and a second outgas hole on the gate control line, the gate control line includes a straight section and a curve section, the second outgas hole includes a first opening on the straight section and a second opening on the curve section, and an area of the first outgas hole is less than an area of each of the first opening and the second opening.
20. The display device of claim 19 , wherein the display panel includes a plurality of pixels, each pixel comprising: a thin film transistor (TFT) including a gate electrode, a source electrode, and a drain electrode; and an anode auxiliary electrode connected to the source electrode or the drain electrode of the TFT, wherein the first gate control line is formed of a same material and on a same layer as the source electrode and the drain electrode of the TFT, and the second gate control line is formed of a same material and on a same layer as the anode auxiliary electrode.
21. The display device of claim 19 , wherein the display panel comprises a high level voltage line through which a high-level voltage is supplied, the high level voltage line including a first high level voltage line and a second high level voltage line disposed on different layers, the second high level voltage line being connected to the first high level voltage line through another contact hole.
22. The display device of claim 21 , wherein the first gate control line is formed of a same material and on a same layer as the first high level voltage line, and the second gate control line is formed of a same material and on a same layer as the second high level voltage line.
This invention relates to display devices, specifically addressing the integration of gate control lines and high-level voltage lines to improve manufacturing efficiency and device performance. The problem being solved involves optimizing the structural design of display panels, particularly in organic light-emitting diode (OLED) displays, to reduce complexity and enhance reliability by minimizing the number of distinct conductive layers required. The display device includes a substrate with multiple conductive lines, including first and second gate control lines and first and second high-level voltage lines. The first gate control line is formed using the same material and on the same layer as the first high-level voltage line, while the second gate control line is formed using the same material and on the same layer as the second high-level voltage line. This shared-layer construction reduces the number of fabrication steps and potential misalignments, improving yield and reducing costs. The gate control lines are used to regulate the operation of transistors within the display, ensuring proper voltage distribution and signal integrity. The high-level voltage lines supply power to the display elements, such as OLED pixels, enabling consistent brightness and performance. By integrating these lines on the same layers, the device achieves a more compact and efficient design while maintaining electrical isolation and functional separation between the control and power pathways. This approach is particularly beneficial in high-resolution displays where space constraints and manufacturing precision are critical.
23. The display device of claim 19 , wherein the area of the second opening is greater than the area of the first opening.
A display device includes a substrate with a first opening and a second opening, where the second opening has a larger area than the first opening. The substrate supports a display panel, and the openings are positioned to allow light to pass through specific regions of the panel. The first opening is smaller and may be used for precise light transmission, while the second, larger opening enables broader light passage or structural flexibility. The display panel may include organic light-emitting diodes (OLEDs) or other emissive elements, and the openings can be aligned with these elements to optimize light output or reduce interference. The substrate may also include additional layers, such as encapsulation or conductive layers, to protect the display components while maintaining functionality. The design ensures efficient light transmission and structural integrity, addressing challenges in display manufacturing where precise light control and durability are required.
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March 23, 2021
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